The commonly used acronym for bovine somatotropin, a naturally occurring polypeptide hormone secreted by the anterior lobe of the pituitary gland. It promotes body growth, which is why it's also referred to as a growth hormone. bST influences the metabolism of proteins, carbohydrates and lipids. See also rbgh.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.